Shorten the subdomains of hosted services

hosts/stratus/containers/docker/actualbudget/default.nix

@@ -1,42 +1,46 @@
 { config, pkgs, ... }:
+let
+  serviceName = "actualbudget";
+  subdomain = "budget";
+in
 {
-  sops.secrets."container/actualbudget/tailscale-auth-key" = { };
+  sops.secrets."container/${serviceName}/tailscale-auth-key" = { };
 
   virtualisation.oci-containers.containers = {
-    actualbudget = {
+    ${serviceName} = {
       image = "ghcr.io/actualbudget/actual-server:latest";
-      volumes = [ "/data/actualbudget:/data" ];
+      volumes = [ "/data/${serviceName}:/data" ];
     };
 
-    tailscale-actualbudget =
+    "tailscale-${serviceName}" =
       let
         configPath = pkgs.writeTextFile {
           name = "config";
           destination = "/tailscale-serve.json";
           text = builtins.toJSON {
             TCP."443".HTTPS = true;
-            Web."actualbudget.${config.networking.domain}:443".Handlers."/".Proxy = "http://127.0.0.1:5006";
+            Web."${subdomain}.${config.networking.domain}:443".Handlers."/".Proxy = "http://127.0.0.1:5006";
           };
         };
       in
       {
         image = "ghcr.io/tailscale/tailscale:latest";
         environment = {
-          TS_HOSTNAME = "actualbudget";
+          TS_HOSTNAME = subdomain;
           TS_STATE_DIR = "/var/lib/tailscale";
           TS_SERVE_CONFIG = "/config/tailscale-serve.json";
           TS_USERSPACE = "true"; # https://github.com/tailscale/tailscale/issues/11372
         };
         environmentFiles = [
           # Contains "TS_AUTHKEY=<token>"
-          config.sops.secrets."container/actualbudget/tailscale-auth-key".path
+          config.sops.secrets."container/${serviceName}/tailscale-auth-key".path
         ];
         volumes = [
-          "/var/lib/tailscale-actualbudget:/var/lib/tailscale"
+          "/var/lib/tailscale-${serviceName}:/var/lib/tailscale"
           "${configPath}:/config"
         ];
-        extraOptions = [ "--network=container:actualbudget" ];
-        dependsOn = [ "actualbudget" ];
+        extraOptions = [ "--network=container:${serviceName}" ];
+        dependsOn = [ serviceName ];
       };
   };
 }

hosts/stratus/containers/docker/onlyoffice/default.nix

@@ -1,48 +1,52 @@
 { config, pkgs, ... }:
+let
+  serviceName = "onlyoffice";
+  subdomain = "office";
+in
 {
   sops.secrets = {
-    "container/onlyoffice/tailscale-auth-key" = { };
-    "container/onlyoffice/jwt-secret" = { };
+    "container/${serviceName}/tailscale-auth-key" = { };
+    "container/${serviceName}/jwt-secret" = { };
   };
 
   virtualisation.oci-containers.containers = {
-    onlyoffice = {
+    ${serviceName} = {
       image = "onlyoffice/documentserver";
       environmentFiles = [
         # Contains "JWT_SECRET=<token>"
-        config.sops.secrets."container/onlyoffice/jwt-secret".path
+        config.sops.secrets."container/${serviceName}/jwt-secret".path
       ];
     };
 
-    tailscale-onlyoffice =
+    "tailscale-${serviceName}" =
       let
         configPath = pkgs.writeTextFile {
           name = "config";
           destination = "/tailscale-serve.json";
           text = builtins.toJSON {
             TCP."443".HTTPS = true;
-            Web."onlyoffice.${config.networking.domain}:443".Handlers."/".Proxy = "http://127.0.0.1:80";
+            Web."${subdomain}.${config.networking.domain}:443".Handlers."/".Proxy = "http://127.0.0.1:80";
           };
         };
       in
       {
         image = "ghcr.io/tailscale/tailscale:latest";
         environment = {
-          TS_HOSTNAME = "onlyoffice";
+          TS_HOSTNAME = subdomain;
           TS_STATE_DIR = "/var/lib/tailscale";
           TS_SERVE_CONFIG = "/config/tailscale-serve.json";
           TS_USERSPACE = "true"; # https://github.com/tailscale/tailscale/issues/11372
         };
         environmentFiles = [
           # Contains "TS_AUTHKEY=<token>"
-          config.sops.secrets."container/onlyoffice/tailscale-auth-key".path
+          config.sops.secrets."container/${serviceName}/tailscale-auth-key".path
         ];
         volumes = [
-          "/var/lib/tailscale-onlyoffice:/var/lib/tailscale"
+          "/var/lib/tailscale-${serviceName}:/var/lib/tailscale"
           "${configPath}:/config"
         ];
-        extraOptions = [ "--network=container:onlyoffice" ];
-        dependsOn = [ "onlyoffice" ];
+        extraOptions = [ "--network=container:${serviceName}" ];
+        dependsOn = [ serviceName ];
       };
   };
 }

hosts/stratus/containers/nspawn/forgejo/default.nix

@@ -41,6 +41,9 @@
         $create --admin --email "sebastian.stork@pm.me" --username seb --password "$(cat ${config.sops.secrets.forgejo-admin-password.path})" || true
       '';
 
-      myConfig.tailscale.serve = "3000";
+      myConfig.tailscale = {
+        subdomain = "git";
+        serve = "3000";
+      };
     };
 }

hosts/stratus/containers/nspawn/nextcloud/default.nix

@@ -1,3 +1,6 @@
+let
+  subdomain = "cloud";
+in
 {
   containers.nextcloud.config =
     {
@@ -41,6 +44,7 @@
         https = true;
         settings = {
           overwriteProtocol = "https";
+          trusted_domains = [ "${subdomain}.${config.networking.domain}" ];
           trusted_proxies = [ "127.0.0.1" ];
           log_type = "file";
           default_phone_region = "DE";
@@ -87,6 +91,9 @@
 
       environment.systemPackages = [ pkgs.ffmpeg ];
 
-      myConfig.tailscale.serve = "80";
+      myConfig.tailscale = {
+        inherit subdomain;
+        serve = "80";
+      };
     };
 }

hosts/stratus/containers/nspawn/paperless/default.nix

@@ -17,6 +17,9 @@
         settings.PAPERLESS_OCR_LANGUAGE = "deu+eng";
       };
 
-      myConfig.tailscale.serve = "28981";
+      myConfig.tailscale = {
+        subdomain = "paper";
+        serve = "28981";
+      };
     };
 }

modules/system/tailscale.nix

@@ -10,6 +10,10 @@ in
 {
   options.myConfig.tailscale = {
     enable = lib.mkEnableOption "";
+    subdomain = lib.mkOption {
+      type = lib.types.nonEmptyStr;
+      default = config.networking.hostName;
+    };
     ssh.enable = lib.mkEnableOption "";
     exitNode.enable = lib.mkEnableOption "";
     serve = lib.mkOption {
@@ -28,6 +32,7 @@ in
       useRoutingFeatures = if (cfg.exitNode.enable || (cfg.serve != null)) then "server" else "client";
       extraUpFlags = [ "--reset=true" ];
       extraSetFlags = [
+        "--hostname=${cfg.subdomain}"
         "--ssh=${lib.boolToString cfg.ssh.enable}"
         "--advertise-exit-node=${lib.boolToString cfg.exitNode.enable}"
       ];